Funding for this research was provided by:
the Scientific Research Talents Training Project of the Fujian Province Health Commission (2018-ZQN-63)
the Natural Scientific Foundation Project of Fujian Province (2019J01684)
Received: 5 September 2019
Accepted: 2 January 2020
First Online: 7 January 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Fujian Medical University (IRB Ref No: 2017/00049). All participants read and signed informed consent agreements prior to the initiation of the study.
: Not applicable.
: The authors declare no potential competing interests.